We correct an error in Table 1 of the Letter 1 regarding the reference data of B3LYP-D3 for S22 and S66. The mean absolute errors (MAEs) in the Letter are 0.15 and 0.18 for S22 and S66, respectively, which are actually the MAEs of B2PLYP-D3. The correct MAEs of B3LYP-D3 are 0.31 and 0.26 instead, which can be found in the Supporting Information of ref 2. For clarity, we include the updated table with the correct data (Table 1). This error does not change any of our calculations or the conclusions of the Letter.